„PISA 2018 collected information regarding bullying at school from the student perspective, which reveals the actual level of bullying at school experienced by students. It found that students who experience bullying on a monthly basis tend to score 21 points lower in reading than their counterparts who report less exposure to bullying. Meanwhile, students who are being frequently bullied tend to report lower life satisfaction, more fragile emotional well-being and a lower sense of belonging compared to students who are less exposed to bullying.“
OECD (Hrsg.), Benchmarking the Performance of China’s Education System (2020), S. 60.